Improvement in perforating-rules for printers



C. W. AMES. Perforating Rules for Printers.

No. 145,380. Patented Dec.9,l87 3.

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L. 0 WW 0 k O B D Figfl K o O B O I. D

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WITNESSES: INVENTOR;

UNITED STATES PATENT OFFICE.

CHAUNOEY W. AMES, OF 'NEVV YORK, N. Y.

IMPROVEMENT IN PERFORATlNG-RULES FOR PRINTERS.

Specification forming part of Letters Patent No. 145,380, dated December9, 1873; application filed August 9, 1872.

To all whom it may concern:

Be it known that I, GHAUNCEY W. ruins, of the city of New York and Stateof New York, have invented certain Ii'nprovements in Perforating-Rulesfor Printers, of which the following is 'a specification:

In the accompanying drawings, Figure 1 is a side view of my perforatorfor dividing sheets of paper when printin Fig. 2 is a view of the samewhen the perforator is pushed upward and forward to cut the sheet ofpaper. Fig. 3 shows one of the side plates removed, and the internalconstruction and arrangement. I

My invention'consists of a knife provided with teeth, and moved upwardand forward on oblique bearings, the same being placed in the form withthe type, and operated simultaneously with the printing process.

My knife or perforator proper is made with teeth, as seen in Fig. 3.This knife is placed between the two side plates B, which are heldtogether by means of a screw, D. This knife has two oblique bearings, Eand F, upon which it slides, or is moved forward and upward, by means ofthe two slides G and H, or by pressure upon the slide G, thus pushingdownward and forward the slide H, and, consequently, the knife A, whichis returned to its place by means of the spring I. Two oval and obliqueslots, M, allow the knife to move freely on the rivets N, Fig. 3. r

In order to adapt the perforator as well for use on cylinder-presses, byholding the knife in position after the pressure is removed from theslide G, the locking pawl or attachment L, Fig. 3, is added, consistingof a pivoted tumbler, fitted to an indentation in the knife, into which,when the knife is raised to position by pressure of'the spring I, afterthe impression, the cylinder, in passing off, presses the elevated endor point of the pawl or tumbler L, forcing it back, and releasing theknife, which then falls or returns to its place or position precisely asif constructed without this attachment.

This perforator is placed in the form with the type, in proper positionfor cutting the sheet when printing. The teeth of the knife are belowthe face of the type, so as not to get it any ink. At the proper timepressure is made upon the slideG, when the knife is raised and the paperthus perforated.

Having thus described my invention, I claim-- 1. The perforator A,provided with oblique bearings E F, and confined between the plates BI3, in combination with slides G H for operating the perforator,substantially as and for the purpose described.

2. The locking-pawl L, in combination with the knife or perforator,substantially as described, and for the purposes set forth.

I'Vitnesses: O. \V. AMES.

E. P. BREED, R. U. FLoUnNoY.

